Finding the Fourth Proportional to 42,892.05, 64,363.35 and 17,930.18

Step by Step Solution

1. Step 1: Write the proportion equation
   42,892.05 : 64,363.35 = 17,930.18 : x
2. Step 2: Convert to fraction form
   42,892.05/64,363.35 = 17,930.18/x
3. Step 3: Cross multiply
   42,892.05x = 64,363.35 × 17,930.18
4. Step 4: Simplify right side
   42,892.05x = 1,154,046,129.09
5. Step 5: Solve for x
   x = 1,154,046,129.09/42,892.05
6. Step 6: Final answer
   x = 26,905.83